Hi,
We are using the BQ25730 to charge the battery in our product.
To power it, two different chargers can be used, both with 24V but different current ratings (2.5A and 6A). Additionaly it would be possible that a customer uses an unknown 3rd-party charger.
To differ between these two chargers, we thought about using the ICO to identify the maximum charging current the charger can supply.
As far as i understood, the Input voltage from the charger has to drop below the InputVoltage register Value to start the ICO.
Our problem is, that this InputVoltage register has a maximum Value of 19.52V which is 4.48V below the output of our charger. That would mean that we have to overload the charger enough to have a drop of 4.5V
When trying it out, we got a max. Input current of over 6A for the 2.5A charger, which is obviously way to high.
At the maximum load of 2.5A we only have a drop of about 400mV.
Is there a way to get this InputVoltage limit higher than 19.52V so we need less of a Voltage drop to recognize the current limit?
Regards,
Ramon
